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Fri Mar 25, 2011 11:49 am

I have a 1835cc engine and I am trying to find out if I can run a Engle W120 Camshaft. Here are the Specs on the engine.

Heads have 40mm intake valves and 32mm exhaust valves

009 Distributor

I'm guessing it has a 110 Cam

69mm CW Crankshaft

Carbs are Dual 40mm idf webers

Rimco As41 I think it is a aluminum case

Ratio for the rockers is 1.1:1 are these the right rockers? If not what ratio do I need?

Please let me know what I need to do to get this camshaft to work. Thanks

Fri Mar 25, 2011 11:55 am

If your Webers have 28mm venturi's then the 120 cam will want to rev past the carbs. It is far from my favorite cam but it's good. Better to add some 1.25 rockers to your 110 cam for now or go with the 120 and up in vent size and re-tune the carbs. If you do that you will have a real screamer on your hands. Is your bottom end up to the task...have a counter weighted crank?

Cam changes can drag a bunch of extra changes with them.

RC

Fri Mar 25, 2011 1:14 pm

I ran an 1835 with a 120 for 5 years. Solid runner but would bog down at the mere sight of a hill if it was running at less than 70mph. Though at 75 or more it would take on any hill if punched, even with a fully loaded bus. So the power band was on the high rpm range. However, that same cam worked near perfect from low to high rpm on the 2276. Ran 40mm Dellortos and Webers on both engines. 8)

Fri Mar 25, 2011 1:34 pm

That cam was a torque monster in my wife's 2180 equipped speedster with 45 dells.

Fri Mar 25, 2011 4:23 pm

If your case has "AS41" cast on it then its not aluminum, AS41 is the alloy name that used to cast the case, at least that's what I'm told.

Casey

Fri Mar 25, 2011 9:18 pm

I ran a 1835 with your same combo and it was a great engine. I had this engine in a 67 ghia in desert heat of 100 plus every day for 3 years I don't know why RC dosent like the 120 but maybe he should try it. In 1988 it made 110 Hp at 5500 RPM and if I had some more fuel it may have made more, great combo @ 9.0 compression. Run it! :D

Fri Mar 25, 2011 9:29 pm

CJG wrote: I ran a 1835 with your same combo and it was a great engine. I had this engine in a 67 ghia in desert heat of 100 plus every day for 3 years I don't know why RC dosent like the 120 but maybe he should try it. In 1988 it made 110 Hp at 5500 RPM and if I had some more fuel it may have made more, great combo @ 9.0 compression. Run it! :D Didn't say I don't like it, just far from my favorite cam but it is a basically ok cam. My issue is the old W-series are lazy grinds. Its like putting a Duntov20-20 in a Chevy engine. Will it work well? Certainly and well, but there are far better lobe designs available today. So the W-series fall into a sort of vintage category to me.

I wish someone would do back to back tests on similar grinds like the W-120 vs the FK-43 I'm sure you'd see big power increases.

RC

Fri Mar 25, 2011 9:33 pm

haha, yeah
and also a big increace in valve hammering noises too I bet
i'd like to see a competition for the quietest HP cam

pauter or cb would not win

Fri Mar 25, 2011 9:50 pm

Just running the ol' Desktop Dyno (actually DD5 instead of the old 2000) shows about a 10% hp and tq increase for the 43 over the 120. Think about that......10% more power for almost the same money. The difference is the rocker cost. Guess I should do the 120 with 1.25's to be fair and then the cast is the same. Checked....still 8% better with the FK-43.

RC

EDIT-an FK-42 vs W-120 w/1.25 rockers is still 3% more average power (that's what all these %'s are) with less duration on the seat and at .050.

Fri Mar 25, 2011 9:54 pm

wow

i have an old chart I made of an engle 120, you know, a graph of the whole curve, lift measured every 10 dgrees.
have you mesured one of the fk-4...... cams? It would be cool to compare them.

I'll show you mine if you show me yours.......

Fri Mar 25, 2011 10:10 pm

modok wrote: wow

i have an old chart I made of an engle 120, you know, a graph of the whole curve, lift measured every 10 dgrees.
have you mesured one of the fk-4...... cams? It would be cool to compare them.

I'll show you mine if you show me yours....... I actually I do have one for the FK-42 but not here at the house. The %'s here are based on the DD5 modeling the cam based on seat-to-seat AND .050 lift figures and timing events and total lift minus lash. A lot better situation then DD2000

Fri Mar 25, 2011 10:27 pm

Seeing it on a graph would be a great way to compare them.
I'd appreciate it if you could spend a few minutes and measure it out when you get it in the engine. They sposedly have asymetrical ramps.

I have the engle 110 graphed too I think.

Fri Mar 25, 2011 10:31 pm

modok wrote: Seeing it on a graph would be a great way to compare them.
I'd appreciate it if you could spend a few minutes and measure it out when you get it in the engine. They sposedly have asymetrical ramps.

I have the engle 110 graphed too I think. Will do. I graphed it on V-blocks, not in the engine. Easy to enter that in a spreadsheet when finished to produce comparative graphs.

Fri Mar 25, 2011 10:46 pm

cool
I'll trade you an old berg 310 too.
heck, you can have the cam as well as the graph, haha